Publications by Type: Conference Proceedings

2016
P. Zhang, Shiriyev, J., Torres-Verdín, C., Sharma, M. M., Brick, Y., Massey, J., and Yilmaz, A., “Fracture diagnostics using a low-frequency electromagnetic induction method (Extended Abstract),” American Rock Mechanics Association (ARMA) 50th US Rock Mechanics/Geomechanics Symposium. Houston, Texas, June 26-29, 2016.
G. Merletti, Gramin, P., Salunke, S., Hamman, J., Spain, D., Shabro, V., Armitage, P., Torres-Verdín, C., Salter, G., and Dacy, J., “How pore-scale attributes may be used to derive robust drainage and imbibition water saturation models in complex tight-gas reservoirs (Expanded Abstract).,” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29, 2016.
G. Merletti, Gramin, P., Salunke, S., Hamman, J., Spain, D., Shabro, V., Armitage, P., Torres-Verdín, C., Salter, G., and Dacy, J., “How pore-scale attributes may be used to derive robust drainage and imbibition water saturation models in complex tight-gas reservoirs (Expanded Abstract),” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29, 2016.
J. D. Escobar, Torres-Verdín, C., Proett, M., and Ma, S. M., “Improving the interpretation of formation-tester measurements with expedient and detailed numerical simulations (Expanded Abstract).,” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29., 2016.
J. D. Escobar, Torres-Verdín, C., Proett, M., and Ma, S. M., “Improving the interpretation of formation-tester measurements with expedient and detailed numerical simulations (Expanded Abstract),” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29, 2016.
V. Puzyrev and Torres-Verdín, C., “Inversion-based interpretation of 3D borehole directional resistivity measurements acquired in high-angle and horizontal wells (Expanded Abstract).,” Society of Exploration Geophysicists (SEG) 86th Ann. Internat. Mtg. Dallas, TX, October 16-21., 2016.
V. Puzyrev and Torres-Verdín, C., “Inversion-based interpretation of 3D borehole directional resistivity measurements acquired in high-angle and horizontal wells (Expanded Abstract),” Society of Exploration Geophysicists (SEG) 86th Ann. Internat. Mtg. Dallas, TX, October 16-21, 2016.
M. J. Ramos, Espinoza, D. N., Torres-Verdín, C., Shovkun, I., and Grover, T., “Laboratory characterization and detection of fractures through combined ultrasonic and triaxial-stress testing (Extended Abstract).,” American Rock Mechanics Association (ARMA) 50th US Rock Mechanics/Geomechanics Symposium. Houston, Texas, June 26-29, 2016.
M. J. Ramos, Espinoza, D. N., Torres-Verdín, C., Shovkun, I., and Grover, T., “Laboratory characterization and detection of fractures through combined ultrasonic and triaxial-stress testing (Extended Abstract),” American Rock Mechanics Association (ARMA) 50th US Rock Mechanics/Geomechanics Symposium. Houston, Texas, June 26-29, 2016.
I. Kim, Worthen, A. J., Lotfollahi, M., Johnston, K. P., DiCarlo, D. A., and Huh, C., “Nanoparticle-Stabilized Emulsions for Improved Mobility Control for Adverse-mobility Waterflooding,” SPE Improved Oil Recovery Conference. Society of Petroleum Engineers, 2016. Publisher's VersionAbstract
The immense nanotechnology advances in other industries provided opportunities to rapidly develop various applications of nanoparticles in the oil and gas industry. In particular, nanoparticle has shown its capability to improve the emulsion stability by generating so-called Pickering emulsion, which is expected to improve EOR processes with better conformance control. Recent studies showed a significant synergy between nanoparticles and very low concentration of surfactant, in generating highly stable emulsions. This study's focus is to exploit the synergy's benefit in employing such emulsions for improved mobility control, especially under high-salinity conditions. Hydrophilic silica nanoparticles were employed to quantify the synergy of nanoparticle and surfactant in oil-in-brine emulsion formation. The nanoparticle and/or the selected surfactant in aqueous phase and decane were co-injected into a sandpack column to generate oil-in-brine emulsions. Four different surfactants (cationic, nonionic, zwitterionic, and anionic) were examined, and the emulsion stability was analyzed using microscope and rheometer. Strong and stable emulsions were successfully generated in the combinations of either cationic or nonionic surfactant with nanoparticles, while the nanoparticles and the surfactant by themselves were unable to generate stable emulsions. The synergy was most significant with the cationic surfactant, while the anionic surfactant was least effective, indicating the electrostatic interactions with surfactant and liquid/liquid interface as a decisive factor. With the zwitterionic surfactant, the synergy effect was not as great as the cationic surfactant. The synergy was greater with the nonionic surfactant than the zwitterionic surfactant, implying that the surfactant adsorption at oil-brine interface can be increased by hydrogen bonding between surfactant and nanoparticle when the electrostatic repulsion is no longer effective. In generating highly stable emulsions for improved control for adverse-mobility waterflooding in harsh-condition reservoirs, we show a procedure to find the optimum choice of surfactant and its concentration to effectively and efficiently generate the nanoparticle-stabilized emulsion exploiting their synergy. The findings in this study propose a way to maximize the beneficial use of nanoparticle-stabilized emulsions for EOR at minimum cost for nanoparticle and surfactant
N. Griffith, Ahmad, Y., Daigle, H., and Huh, C., “Nanoparticle-stabilized natural gas liquid-in-water emulsions for residual oil recovery,” SPE Improved Oil Recovery Conference. Society of Petroleum Engineers, 2016.
M. Palavecino and Torres-Verdín, C., “New method of petrophysical rock classification based on MICP and grain-size distribution measurements (Expanded Abstract).,” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29., 2016.
M. Palavecino and Torres-Verdín, C., “New method of petrophysical rock classification based on MICP and grain-size distribution measurements (Expanded Abstract),” Society of Petrophysicists and Well Log Analysts (SPWLA) 57th Ann. Logging Symposium. Reykjavik, Iceland, June 25-29., 2016.
E. Maalouf and Torres-Verdín, C., “New physics-based method to efficiently mitigate noise in borehole sonic logs (Expanded Abstract).,” Society of Exploration Geophysicists (SEG) 86th Ann. Internat. Mtg. Dallas, TX, October 16-21., 2016.
E. Maalouf and Torres-Verdín, C., “New physics-based method to efficiently mitigate noise in borehole sonic logs (Expanded Abstract),” Society of Exploration Geophysicists (SEG) 86th Ann. Internat. Mtg. Dallas, TX, October 16-21, 2016.
J. A. Valdez and Tinney, C. E., “A new thrust stand for testing multi-stream and heat simulated supersonic nozzles.,” 54th AIAA Aerospace Sciences Meeting, AIAA Paper 2016-1890. San Diego, California, USA, 2016.Abstract
The design, fabrication and calibration of a new thrust stand for conducting thrust andaeroacoustic measurements concurrently in a fully anechoic chamber is discussed. The new thrust stand employs the scale-force measurement technique and is designed to accommodate multi-stream nozzles (core and bypass flow streams). Each stream has a dedicated helium air mixture system thereby permitting a multitude of test conditions. The methodology for designing the thrust stand is described and uses a notch type flexure which demonstrates high repeatability over extended thrust ranges. Calibration is performed with elevated pressure inside the plenum to characterize the effect of increased pressure on the flexure performance. A further qualification of the thrust measurement accuracy is conducted using a small arsenal of nozzles comprising method of characteristics contours. Surveys of the far-field pressure are then conducted during various operating points along the startup curve of a Mach 1.71 rectangular supersonic nozzle.
S. Ko, Kim, E. S., Park, S., Daigle, H., Milner, T. E., Huh, C., Bennetzen, M. V., and Geremia, G. A., “Oil Droplet Removal from Produced Water Using Nanoparticles and Their Magnetic Separation,” SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2016.
E. Bakolas, “Optimal Covariance Control for Discrete Time Stochastic
Linear Systems Subject to Constraints
,” IEEE Conference on Decision and Control. Las Vegas, NV, 2016.PDF icon bakolascdc2016_cv.pdf
D. Pylorof and Bakolas, E., “Analysis and Synthesis of Nonlinear Controllers for Input Constrained Systems using Semidefinite
Programming Optimization
,” American Control Conference. Boston, 2016.PDF icon acc2016_clf_sos_dpeb.pdf
J. Selvakumar and Bakolas, E., “Evasion from a Group of Pursuers with a Prescribed Target Set for the Evader,” American Control Conference. Boston, 2016.PDF icon acc2016_jseb.pdf

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